bitcoin

An increase in the value of bitcoin, the world’s largest online currency, may fuel concerns that virtual money could undermine the role of central banks. The CHART OF THE DAY shows that bitcoin has more than doubled in the past 12 months, strengthening to $16.37 from $5.88, according to data from Mt. Gox, the world’s largest bitcoin exchange. The money, issued by a decentralized network of computers, has recovered after falling to $2.14 in November 2011 from a high of $29.58 five months earlier. Greater demand for virtual currencies could have a negative impact on the reputation of central banks, according to a report published by the European Central Bank in October last year. Since the report was released, bitcoin has risen more than 55 percent against the dollar and use of the currency has surged. Bitpay Inc., a bitcoin payment processing company that recently raised $5...